OmniSharp server times out when using WSL extension

## Issue Description ##
When I load a project in Code using the WSL extension, the C# extension does not work at all. Looking at the OmniSharp log, it seems to fail to load.

```
Starting OmniSharp server at 9/29/2020, 2:56:42 PM
Target: /home/zerokoll/code/temp/mvc-test

OmniSharp server started.
Path: /home/zerokoll/.vscode-server/extensions/ms-dotnettools.csharp-1.23.2/.omnisharp/1.37.1/run
PID: 16672

your 131072x1 screen size is bogus. expect trouble
your 131072x1 screen size is bogus. expect trouble
xargs: unmatched double quote; by default quotes are special to xargs unless you use the -0 option
[ERROR] Error: OmniSharp server load timed out. Use the 'omnisharp.projectLoadTimeout' setting to override the default delay (one minute).
```

Looking at previous issues, I have seen that the "bogus screen size" output was supposed to be fixed, but is showing up here. But it does not seem to be the reason for it failing.

## Steps to Reproduce ##
Locally, it is reproduced loading any project using WSL.

## Expected Behavior ##
OmniSharp server starts up and provides C# editing experience as expected.

## Actual Behavior ##
C# editing does not work at all.

## Logs ##

### OmniSharp log ###
Starting OmniSharp server at 9/29/2020, 3:04:20 PM
Target: /home/zerokoll/code/temp/mvc-test

OmniSharp server started.
Path: /home/zerokoll/.vscode-server/extensions/ms-dotnettools.csharp-1.23.2/.omnisharp/1.37.1/run
PID: 17640

your 131072x1 screen size is bogus. expect trouble
your 131072x1 screen size is bogus. expect trouble
xargs: unmatched double quote; by default quotes are special to xargs unless you use the -0 option

### C# log ###
Empty

## Environment information ##

**VSCode version**: 1.49.2
**C# Extension**: 1.23.2

Mono Information
OmniSharp using built-in mono
Dotnet Information
.NET SDK (reflecting any global.json):
Version: 5.0.100-rc.1.20452.10
Commit: 473d1b592e

Runtime Environment:
OS Name: ubuntu
OS Version: 18.04
OS Platform: Linux
RID: ubuntu.18.04-x64
Base Path: /usr/share/dotnet/sdk/5.0.100-rc.1.20452.10/

Host (useful for support):
Version: 5.0.0-rc.1.20451.14
Commit: 38017c3935

.NET SDKs installed:
5.0.100-rc.1.20452.10 [/usr/share/dotnet/sdk]

.NET runtimes installed:
Microsoft.AspNetCore.App 5.0.0-rc.1.20451.17 [/usr/share/dotnet/shared/Microsoft.AspNetCore.App]
Microsoft.NETCore.App 5.0.0-rc.1.20451.14 [/usr/share/dotnet/shared/Microsoft.NETCore.App]

To install additional .NET runtimes or SDKs:
https://aka.ms/dotnet-download

Visual Studio Code Extensions

|Extension|Author|Version|
|---|---|---|
|csharp|ms-dotnettools|1.23.2|
|vs-sharper|eservice-online|0.2.0|;